Horror icons Boris Karloff (Frankenstein) and Bela Lugosi (Dracula) star in the wicked thriller The Invisible Ray. On a scientific expedition to Africa, Dr. Janos Rukh (Boris Karloff) discovers a meteorite containing an unknown element a thousand times more powerful than radium. Contaminated by his contact with the element, Rukh finds himself killing everyone he touches. His friend Dr. Benet (Bela Lugosi) develops an antidote, but its effects are short-lived and result in unintended side-effects. As paranoia sets in, the doctor becomes increasingly unable to control the urge to kill and eventually goes insane. No one is immune to the effects of The Invisible Ray in this classic chiller.